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A.' E. KRUSE REFUSE BURNER Filed Sept. 22. 1924 Patented Dec. 22, V1,925.

Anemia E. Knr-USE, or ron'rLANn', OREGO.- y

i nnrefsn 4'n univait.

Application, aiei s'eptnber To all iii/icm t may concern.: Y Be it hereby lnowntha't I, .AR'cH'n Ketten, a citiz'enot the Unitedv States, and a resident ot' Portland, in the county of Multnomah and State ot Oregon, have invented a newI and usetul Refuse Burner, of which thev following is a specification. l

This invention relates generally to refuse burners and particularly to the burning of such materials as saw dust. l' y An object of my invention is the provision ot an exceedingly simpleand etiicient'means for disposing of sawdust, edgings andgeneral refuse accumulating in saw mills with- I out an undue initial` investment, largeexpenditure ot labor for operation or high maintenance cest.

` A second object is to so construct thedevice that no amount of careless handling will cause same to be injured by the heat generated by the combustion. y A third object is to permit the device t0 be easily moved out of the way :for cleaning purposes, or for any other reason:l i l A fourth object is to provide a way ot removing ashes,` from the burner with the least amount ofv labor and inconvenience.

A fifth object is to permit the boring of a` hole or tunnel into a saw 'dust pile with the aid lofthe burner, land into which ample .quantities of air can bev fed to completely burn the pile.

A sixth object is to' completely `dislie'n'sel with grate bars and all metal work liable to beinjured by the heat.

In describing my device I have illustrated same in conjunction with a pit 'for receiving saw dust such as is generally Jfound around saw mills. w

IVhile refuse burning is one of the principal uses for this device it must be understood that the same apparatus can be employed to generate heat under boilers, etc., without departing from the spirit of my invention.

I accomplish these results in the manner set toi-th in the following specification and illustrated in the accompanying drawing, in which:

Figure 1 is a sectional view through the water-cooled burner tip. Figure 2 is' a section through a burning pit and, saw dust pile showing the position of the burner tip and its relation to the entire appara-tus, in

' ing its ends open.

nti; geen ab. man.

elevation. Figure 8 is an end elevation of the burner tip yas shown in Figurel. A

'h Similar numbers of reieren'ce, refer tothe same parts throughout the several views.

.Referring in detail to the drawing, I have illustrated a portionof the usual burning pit v whose walls 10 enclose a pile of saw vdust 11 deposited by the'` conveyor 12 over the justed by means of the cable 14 in any convenient manner. y

Through' thewwall 10 I have projecteda burner tip consisting yot a cylindrical shell `chute 18 whose discharge end maybe ad-l 15 having art'apering core -l'secured therein...

ineansof the iiangedring 17 which pro- `jects into the saw dust pile and'bymeans o t riveting the end 18 which piOjC'QS Outside of the wall 10. Around the shell 15 I shell 15 isV mounted on the lpiers 19 andfroclrs 19A are piled aroundthe insulated shell leav- Op'e-Iiing i'n'tzofth'e shell 15 near theend18 have `placed a layer of aSbestos15/ The,`

is an overflow pipe 2O andalsciA the inde`4 pendenty water supplyr` pipes 2,1 provided i with valves I22 which are incapable of completely shuttingv oft the wateri supply. `,The pipes'` 21 are provided with extensions 23I Abetween t-he shells 15 and land .discharge against the ring v17. I have also provided".

'clean-out holes on the upper and lower sides ofthe .projecting portionvr of ,theH vshell 15, which arencrinally kept closedby means ot fthe.cover's1`24fand 25., IA tunnel 26), which. leads from" the outside of theburning pit to a point where most of the ashes are apt to form within the pit, is also provided for convenience in cleaning.

In front of the open end 18 ot the burner tip and co-aXial therewith, I have placed an air pipe 27 towhich air is supplied by means of a blower 28 mounted on a carriage 29 and driven by a motor 30, also mounted on the carriage 29, through the medium of the belt 31. The carriage 29 is mounted on a track `r 32. A post 33 is mounted on the carriage 29 and supports the cable 34, which in turn, supports the pipe 27 from the carriage 29.

The operation of my device is as follows: If a pile of saw dust has accumulated within the pit in which no ire exists, it is only necessary to start some trash burning within the shell 16 and to start the blower 28,

lll?) moving the discharge end oi the pipe 27 into the shell 16 as the combustion gets under way until a crater 35 is formed with in the pile 11. j

It will be noted that inthe beginning the surplus of air from the blower backfires, or comes out of the end 18, but that as the combustion increases that more air is required, until finally all of the air of the blower and the air which is drawny in through the shell 16 by the'flow of air from the pipe 27 j is required to feed the combus tion.V y

After the flames have broke-n through the sides of the pile there is a natui'al'draft through .the shell 16 which permits the stop-` ping of the blower', if desired, unless a very large amount of refuse isbeing deposited at the time. Vt will be observed that water is continually flowingfrom the pipe 2O under the control of the valves 22 which, as stated, are noteapable of completely stopping this flow. If itY develops thatI thisy water becomes abnormally hot, the flow is increased as much as desired, since the incoming water is discharged against the ring 17, which is @at the hottest point of the entireV device, and

it can be seen that there is no danger of this Y exposed part being injured by theY intense heat created.

If operating with a scarcity of water, the overflow can run into a cooling basin and re-used with very little effort, since only a few feet of head are required to operate the device.

If the water used is inclined to form a deposit or leave a sediment between the shells 15 and 16 it is only necessary to re- Jmove the covers 2li Vand 25 to thoroughly Feleanse the water jacket.- However, as there isa continual flow of` water through the device this V1s necessary only on very rare l occasions.

I am aware that many forms of saw dust burners have been constructed in the past, I therefore donot claim such devices broadycharge of said tube.

be varied; and means for depositing refuse Y to be burned approximately over the dis 3. A refuse burner tion, a pit; a water-cooled tube. passing through the wall of said pit; an adjustable conveyor arranged to discharge refuse upon the inner end of said tube; a slidable air supply pipe protruding into the outer end o f said tube; andvv means for passing sufiicient water around said tubevtoprotect same from the heat generated.

4. In a refuse burner, the 'combination of a water-cooled tube with' a carriage; ak

blower mounted on said carriage; a discharge. Pipe y0n said Vblower mounted co4y i' axially with said tube; and means for driving said blower in a manner that air may be discharged into said tube at any portion of its length. i

5. In a refuse burner, the combination of a tube consisting ofA a cylindrical outer shell; a taperingV inner shell joined at its ends to said outer shell in a manner to form a water jacket; a pair of independently supplied water pipes discharging into the for-k ward lower end of said jacket; a discharge ypipe Vat the rearward and upper side of said jacket; and valve means for controlling the supply of water to said jacket but incapable of completely cutting off the supply therefrom.

y Anornn E. KnUsE.

Y i uo having, in combina-v 

